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client/src/pages/TutorialTasks.tsx

@@ -126,6 +126,7 @@ const TutorialTasks: React.FC = () => {
   // Minimal, local scroll-stability helpers for submit/delete
   // Basic UA check; Chrome on iOS uses WKWebView but includes 'CriOS'
   const isSafari = typeof navigator !== 'undefined' && /Safari\//.test(navigator.userAgent) && !/Chrome\//.test(navigator.userAgent) && !/CriOS\//.test(navigator.userAgent);
+  const SAFARI_FREEZE_ENABLED = false; // disable body-freeze so scroll compensation can apply
 
   const lockListHeight = () => {
     const el = listRef.current;
@@ -320,8 +321,10 @@ const TutorialTasks: React.FC = () => {
 
     const loadDocs = useCallback(async () => {
       try {
+        // throttle fetch during and just after mutations to avoid reflow interference
         if (mutatingTaskId) {
           try { console.log('[Trace] Docs:skipDuringMutate', { weekNumber, mutatingTaskId }); } catch {}
+          setTimeout(() => { if (!mutatingTaskId) loadDocs(); }, 400);
           return;
         }
         try { console.log('[Trace] Docs:fetch', { weekNumber }); } catch {}
@@ -892,7 +895,7 @@ const TutorialTasks: React.FC = () => {
 
     try {
       setMutatingTaskId(taskId);
-      if (isSafari) {
+      if (isSafari && SAFARI_FREEZE_ENABLED) {
         try { (document.activeElement as HTMLElement | null)?.blur?.(); } catch {}
         freezeScroll();
       }
@@ -990,7 +993,7 @@ const TutorialTasks: React.FC = () => {
         unlockCardHeightById(taskId);
         unlockGridHeightById(taskId);
         unlockContainerHeightById(taskId);
-        if (isSafari) { unfreezeScroll(); }
+        if (isSafari && SAFARI_FREEZE_ENABLED) { unfreezeScroll(); }
       };
       if (isSafari) {
         requestAnimationFrame(() => requestAnimationFrame(() => requestAnimationFrame(release)));
@@ -1044,7 +1047,7 @@ const TutorialTasks: React.FC = () => {
 
     try {
       if (taskId) setMutatingTaskId(taskId);
-      if (isSafari) { freezeScroll(); }
+      if (isSafari && SAFARI_FREEZE_ENABLED) { freezeScroll(); }
       lockListHeight();
       if (taskId) {
         lockCardHeightById(taskId);
@@ -1110,7 +1113,7 @@ const TutorialTasks: React.FC = () => {
         unlockGridHeightById(taskId);
       }
       if (isSafari) { 
-        unfreezeScroll();
+        if (SAFARI_FREEZE_ENABLED) unfreezeScroll();
         // Safari: delay per-task refetch until after unlock to avoid visible reflow
         if (taskId) {
           setTimeout(() => {